Sounds good in theory, but it would confuse the market. It would be confusing to distinguish between controllers with and without the technology. It's easier for them simply to include MotionPlus in the box, both with the system and with extra contollers, as they often have been doing lately.
Could I trouble you for some maple syrup to go with the plate of roffles you just served up?
Tag, courtesy of fkusumot: "Why do most of the PS3 fanboys have avatars that looks totally pissed?"
"Ok, girl's trapped in the elevator, and the power's off. I swear, if a zombie comes around the next corner..."